package com.itheima.common;

import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;

import java.sql.SQLIntegrityConstraintViolationException;

@ControllerAdvice(annotations = {RestController.class, Controller.class})//（对哪些进行捕获异常）
@ResponseBody
@Slf4j
public class GlobalExceptionHandler {
    @ExceptionHandler(SQLIntegrityConstraintViolationException.class)
    public R<String> exceptionHandler(SQLIntegrityConstraintViolationException ex){
        log.error(ex.getMessage());//输出错误信息

        if(ex.getMessage().contains("Duplicate entry")){
            String[] split=ex.getMessage().split(" ");//以空格为条件把错误信息转换为字符串(双引号中间要有空格)
            String msg=split[2]+"已存在";
            return R.error(msg);
        }
        return R.error("未知错误");
    }
    //进行异常处理方法
    @ExceptionHandler(CustomException.class)
    public R<String> exceptionHandler(CustomException ex){
        log.error(ex.getMessage());

        return R.error(ex.getMessage());
    }
}
